Another attempt at fixing dead frames being tracked by webNavigation

chrome/browser/renderer_host/chrome_resource_dispatcher_host_delegate.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 #define CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_
 
 #include <set>
 
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/metrics/field_trial.h"
 #include "chrome/common/metrics/variation_ids.h"
 #include "content/public/browser/resource_dispatcher_host_delegate.h"
 
 class DelayedResourceQueue;
 class DownloadRequestLimiter;
 class SafeBrowsingService;
+class TestNavigationListener;
 
 namespace extensions {
 class UserScriptListener;
 }
 
 namespace prerender {
 class PrerenderTracker;
 }
 
 // Implements ResourceDispatcherHostDelegate. Currently used by the Prerender
 // system to abort requests and add to the load flags when a request begins.
 class ChromeResourceDispatcherHostDelegate
     : public content::ResourceDispatcherHostDelegate,
       public base::FieldTrialList::Observer {
  public:
   // This class does not take ownership of the tracker but merely holds a
   // reference to it to avoid accessing g_browser_process.
   // |prerender_tracker| must outlive |this|.
   explicit ChromeResourceDispatcherHostDelegate(
       prerender::PrerenderTracker* prerender_tracker);
   virtual ~ChromeResourceDispatcherHostDelegate();
 
+  // Use the |test_navigation_listener| to create additional resource throttles.
+  void SetTestNavigationListener(
+      TestNavigationListener* test_navigation_listener);
+
   // ResourceDispatcherHostDelegate implementation.
   virtual bool ShouldBeginRequest(
       int child_id,
       int route_id,
       const std::string& method,
       const GURL& url,
       ResourceType::Type resource_type,
       content::ResourceContext* resource_context,
       const content::Referrer& referrer) OVERRIDE;
   virtual void RequestBeginning(
@@ skipping 63 matching lines @@
   // This method also registers the caller with the FieldTrialList to receive
   // new variation IDs.
   void InitVariationIDsCacheIfNeeded();
 
   // Takes whatever is currently in |variation_ids_set_| and recreates
   // |variation_ids_header_| with it.
   void UpdateVariationIDsHeaderValue();
 
   scoped_refptr<DownloadRequestLimiter> download_request_limiter_;
   scoped_refptr<SafeBrowsingService> safe_browsing_;
+  scoped_refptr<TestNavigationListener> test_navigation_listener_;
   scoped_refptr<extensions::UserScriptListener> user_script_listener_;
   prerender::PrerenderTracker* prerender_tracker_;
 
   // Whether or not we've initialized the Cache.
   bool variation_ids_cache_initialized_;
 
   // Keep a cache of variation IDs that are transmitted in headers to Google.
   // This consists of a list of valid IDs, and the actual transmitted header.
   // Note that since this cache is both initialized and accessed from the IO
   // thread, we do not need to synchronize its uses.
   std::set<chrome_variations::VariationID> variation_ids_set_;
   std::string variation_ids_header_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeResourceDispatcherHostDelegate);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_CHROME_RESOURCE_DISPATCHER_HOST_DELEGATE_H_